UI/UX: Improve visual clarity and consistency

- Align status bars with label padding (HP, Stamina, XP)
- Add clear combat turn indicators (YOUR TURN / ENEMY TURN)
- Display HP/Stamina bars in inventory menu and usage
- Add consistent separators between sections
- Improve feedback for item usage with visible stat changes

Files modified:
- bot/utils.py: Added label_width parameter to format_stat_bar()
- bot/combat.py: Turn headers and separators
- bot/inventory_handlers.py: HP/Stamina display
- bot/action_handlers.py: Separator placement fix

See docs/development/UI_UX_IMPROVEMENTS.md for details

bot/utils.py

@@ -43,7 +43,7 @@ def create_progress_bar(current: int, maximum: int, length: int = 10, filled_cha
     return filled_char * filled_length + empty_char * empty_length
 
 
-def format_stat_bar(label: str, emoji: str, current: int, maximum: int, bar_length: int = 10) -> str:
+def format_stat_bar(label: str, emoji: str, current: int, maximum: int, bar_length: int = 10, label_width: int = 7) -> str:
     """
     Format a stat (HP, Stamina, etc.) with visual progress bar.
     
@@ -53,20 +53,25 @@ def format_stat_bar(label: str, emoji: str, current: int, maximum: int, bar_leng
         current: Current value
         maximum: Maximum value
         bar_length: Length of the progress bar
+        label_width: Width to pad label to for alignment (default 7)
     
     Returns:
         Formatted string with bar and percentage
         
     Examples:
         >>> format_stat_bar("HP", "❤️", 75, 100)
-        "❤️ HP: ███████░░░ 75% (75/100)"
+        "❤️ HP:      ███████░░░ 75% (75/100)"
         >>> format_stat_bar("Stamina", "⚡", 50, 100)
         "⚡ Stamina: █████░░░░░ 50% (50/100)"
     """
     bar = create_progress_bar(current, maximum, bar_length)
     percentage = int((current / maximum * 100)) if maximum > 0 else 0
     
-    return f"{emoji} {label}: {bar} {percentage}% ({current}/{maximum})"
+    # Pad label for alignment
+    padded_label = f"{label}:".ljust(label_width + 1)
+    
+    return f"{emoji} {padded_label} {bar} {percentage}% ({current}/{maximum})"
+
 
 
 def get_admin_ids():